Experiment Research of Fast Electrooptic Q-switch Drive Circuit in Solid Laser

Three kinds of electrooptic Q-switch drive circuits are disscusses.The electronic tube Q-switch circuit works stably,the voltage fall time is 70 ns,but its space cubage is large and laser pulse energy is low.Avalanche transistor series Q-switch circuit has rapid fall time(20 ns)of voltage,high laser pulse energy and narrow laser pulsewidth.The MOSFET series Q-switch circuit is simple and reliable.It can withstand higher voltage,The voltage fall time is 50 ns.